I Can Copy Curses - Chapter 349 - . Sir Edwill and Dreamshore

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

The handsome, skilled newbie livestreamer, Ji Zhiyao, has a dream.

In a world where power is dictated by gangs, cities, and families ranked from Tier 1 to Tier 6, only the strongest survive. In the Tier 4 city of Blackridge, fifteen-year-old Elijah struggles to find his place. With his mother working tirelessly and his younger sister depending on him, he has always kept his head down.Determined to rise above the chaos, Elijah and his best friend Kai decide to create their own gang from nothing. But strength in this world isn’t given—it’s taken. The gangs that rule Blackridge won’t tolerate competition, and even the weakest gang has more resources, manpower, and experience than they do. With no money, no reputation, and no clear allies, they must navigate a brutal world of betrayals, violence, and ambition, where every decision could mean life or death.But Elijah is different. He possesses a mysterious system that offers him power—at a cost. As he slowly uncovers its secrets, he realizes that survival is not enough. To protect those he loves, he must become stronger than anyone else. He must climb the ranks, crush the opposition, and seize control of Blackridge’s underworld.But in a world ruled by kings, warlords, and ancient families, the price of power is steep. And when the past comes back to haunt him—when whispers of a forgotten night resurface—Elijah must confront not only his enemies but the truth about himself.In the gang world, the strong rise, the weak perish, and only the ruthless reign supreme.And Elijah? He plans to reign at the very top

Bai Aoxue, the best mercenary in the 21st century, is accidentally sent back to the Chengxi Dynasty in Great Continent due to an explosion in her mission, and trapped in the first daughter of Prime Minister. After her rebirth, she is set up by her father to marry the 5th prince Jun Yeyan who wears a mask all day long.
In the face of bloodthirsty enemies, discord between brothers, collusion among courtiers and invasion of enemy state, can Bai and Jun resolve the crises? What will happen to their political marriage? How will the fierce battle for the throne end?
With many twists and turns, the book brings you to experience palace revolution, love and hatred thousands of years ago.

- Description from Novelupdates